Flat and filler for egg holding cases



March 21, 1933. KRONENBERGER 1,901,913

FLAT AND FILLER FOR EGG HOLDING CASES Original Filed April 18, 1929 2Shets-Sheet l INVENTOR BY Z 5' ATTORNEY March 21, 1933. KRQNENBERGER1,901,913

FL'AT AND FILLER FOR EGG HOLDING CASES Original Filed April 18, 1929 2Sheets-Sheet 2 ATTORNEY Patented Mar. 21, 1933 PATENT OFFICE FERDINANDKRONENBEBGER, OF BROOKLYN, NEW YORK FLAT AND FILLER FOB EGG HOLDINGCASES Application filed April 18, 1929, Serial No. 856,016. RenewedAugust 5, 1932.

The object of the present invention is to provide a fiat for egg casesand coacting fillers therefor which shall be so formed that when thefiat and filler units are assem- 5 bled a rigid structure is provided,the filler members resisting end or sidewise movement of the flats andthe flats resisting lateral movements of the filler units. A moreimportant feature, of the invention, however, resides in the formationof the flat in such manner that it may be readily produced by rollingand pressing steps from sheet cardboard, the final fiat being of suchstrength due to its formation that relatively thin cheap cardboard maybe employed. Other objects of the invention will hereinafter appear. a

The invention will be described with reference to the accompanyingdrawings in the same on the line 2-2, Fig. 1;

Figure 3 is a perspective top view of a portion of the fiat;

Figure 3a is a sectional elevation of two of the fiats separated -byfiller units;

Figure 4 is a sectional side elevation showing an assembly of upper andlower flats and filler units with eggs in position;

Figure 5 is a plan View showing filler.

units in position and the fragment of a flat laid thereon, and

Figure 6 is a fragmentary view in elevation of one of the filler units.

Referring to the drawings in Figs. 1 and 2 I have shown the completedegg flat. It

comprises parallel rows of cup-like units 2 formed in a sheet A, theindividual cups being separated by transversely extending .rows of ribs3, 300, the material of the sheet sloping downward from the top of eachrib and toward opposite sides thereof to the base of adjacent cups. Attheir base the cups are raised so that the sheet at such points has aconvex upper. formation and a concave lower formation.

It will be noted by reference to the drawings that each rib bounding aside of amp is curved and each rib as a whole is of wavy formation,shown more particularly in Figs. 3 and 4. Each rib at the top is formedwith a succession of concave surfaces and at the bottom with asuccession of convex surfaces. Referring to Figs. 3 and 4 it will beseen that the filler pieces B correspond with the rib formation of theflats, the top edge of .each filler being formed with a.- plurality ofconvex surfaces 4: and the bottom edge with a plurality of concavesurfaces 5. The manner in which the top and bottom surfaces of eachfiller unit interlocks with upper and lower flats is best illustrated inFig. 4. When the structure of upper and lower flats and interengagingfiller units, the latter being slotted for interengagement at 6 inaccordance with the universal practice, is assembled with the eggs lyingbetween the other words, the material depressed at the ribs is given upto the channels by moving the latter downwardly and thus increasingtheir depth at spaced points. When this is done sections of the sheetmay be placed in dies to complete the formation of the fiat inaccordance with the structure illustrated in the present drawings. Thismay be done without fracture or wrinkling of the sheet material,inasmuch as the structure is such that the dies are not required tostretch the material but merely to move the various sections of thecupped sheet, the required fullness of material having been provided atall required points.

Having described my invention what I claim and desire to secure byLetters Patent is as follows z- 1. In combination an egg flat formed ofsheet material and comp rows of successive inverted egg holders, t eholders being bounded b transverse rows of intersecting channe each ofwavy formation, and a filler unit for coaction therewith, each unitcomprising transversely extendin filler pieces each piece having its topan bottom edges of wavy formation'corresponding with the formation ofone of said channels wherely endwise movement of the pieceisr resiste g2. An egg flat comprising a sheet of fibrous material having formedtherein rows of upwardly projecting egg holders, ar-

ranged in parallel rows, the rows being bounded by transverseintersecting channels each of wavy formation and the channels havingtheirmajor depth at the points of intersection, each channel beingthereby adapted for coaction with a filler piece having its top andbottom edges of wavy formation correspondin with the formation of thechannel where y endwise movement of the piece is resisted.

In testimony whereof, I have signed my name to this specification.

FEBDIN AND KRONENBERGER.

